PCI: pci-x-pci-express-read-control-interfaces cleanups

- remove unneeded local

- 80-col fix

Cc: Peter Oruba <peter.oruba@amd.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>